Data Source Integration(DSI)

[file system]

I have studied DSI,but I have questions about CLASS_NAME and CLASS_ID.

it says 'THE class_name and Class_id_number must be unique and can not be duplicated any application...'

1)How can I determine class_name and class_id are not duplicated

2)Does it has any sort of class, class_id matrix?

3)As below as you see

CLASS VMSTAT_STATS = 10001
LABEL "VMSTAT data"
INDEX BY HOUR
MAX INDEXES 12
ROLL BY HOUR
RECORDS PER HOUR 120
;

METRICS
RUN_Q_PROCS
LABEL "Procs in run q"
PRECISION 0
;
BLOCKED_PROCS
LABEL "Blocked Processes"
PRECISION 0

it includes syntax like'CLASS VMSTAT_STATS = 10001'
What sorf of CLASS_NAME and CLASS_ID are sustitued for? by matrix

Does it exist class and class_id matrix?